ClockTuner for Ryzen helped my Ryzen 3300x with undervolting. 4150mhz all core @1.18125v. Max temp 85C (previously 92C) with stock cooler, airflow restricted m-itx case and ambient temp 27C : r/pcmasterrace
New build: R3 3300x + 2060 or R5 3600 + 1660 (Super or Ti ) - New Builds and Planning - Linus Tech Tips